ABSTRACT. Cardiac sarcoidosis (CS) can cause atrial and ventricular arrhythmias, conduction system disease, and congestive heart failure. The use of advanced imaging modalities including cardiac magnetic resonance and positron emission tomography with 2-deoxy-2-[fluorineCS initially presenting with paroxysmal atrial fibrillation (AF) who later developed polymorphic ventricular tachycardia, highlighting the complexity of diagnosis and management in patients with multisystem sarcoidosis.
Case presentationA 55-year-old Caucasian male presented to an outside clinic with a two-month history of fatigue and right bundle branch block (RBBB). At the time of presentation, he exhibited AF with a rapid ventricular response. Symptoms included shortness of breath and chest discomfort during episodes of AF, which lasted 15 to 120 minutes. Cardiac computed tomography (CT) angiography revealed a lesion in the left anterior descending coronary artery, but subsequent cardiac catheterization revealed no evidence of obstructive coronary artery disease. Notably, mildly enlarged lymph nodes in the pericardial region and mediastinum were observed on the CT angiogram. Three years prior, his left ventricular ejection fraction (LVEF) was 55% on cardiac catheterization. Two weeks prior to referral, transthoracic echocardiogram revealed an LVEF of 40%, and the newly depressed LVEF